Hi Nan
It might be you could use profiles or timeseries of profiles
Kjell Røang
On Wed, Jul 7, 2010 at 6:38 PM, John Caron <caron@xxxxxxxxxxxxxxxx> wrote:
> Hi Nan:
>
> The working definitions are at
>
> http://cf-pcmdi.llnl.gov/trac/wiki/PointObservationConventions.
>
> but that site (or my home ISP) is down at the moment, so i cant give you a
> more specific URL.
>
> In terms of your problem, station data has a fixed lat, lon, altitude. The
> data belonging to the station may have an additional z coordinate that is
> typically interpreted relative to the station altitude.
>
> For more complicated topology, you might also consider the profile data
> type, which expects an array of data with varying z coordinates.
>
> John
>
>
> Nan Galbraith wrote:
>
>> Hi John -
>>
>> The document at unidata.ucar.edu/software/netcdf-java/CDM/
>> does not include definitions for the feature types, and it points
>> to a word doc, CDM Feature Types which is labeled as a draft.
>> The definition of 'station' in that draft document has me a little
>> confused.
>>
>> > Station feature: a time-series of data points all at the same
>> > location, with varying time (fixed x,y,z; ordered t).
>>
>> Does this imply only that Z is fixed, or that it also must be a
>> single point?
>>
>> In the OceanSITES project, our data is mainly 2-d time series,
>> with fixed X,Y, and fixed - but multiple - Z. We've added a
>> global attribute to our NetCDF files, 'cdm_data_type' which
>> we define as giving 'the Unidata CDM (common data model)
>> data type used by THREDDS. E.g. ...“Station”...' and advise
>> users to 'Use “Station” for OceanSITES mooring data.'
>>
>> Can you please tell me if we're using the correct feature type?
>> I have a sinking feeling that Unidata has defined 'station' in
>> a very narrow way, which would make it inappropriate for
>> mooring data.
>>
>> If these definitions are on line in a non-draft form, we'd like to
>> include a link to them in our Users Manual - but I've searched
>> the Unidata site and not found anything.
>>
>> Thanks -
>> Nan Galbraith
>>
>>
>>
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